Heli-coil R513-13 Free Running Insert M14 X 1.25 6 Pack

Product Description

The HELI-COIL R513-13 is a tanged, free running helical wire thread insert engineered to create strong, wear-resistant internal threads in parent materials that are soft, damaged, or otherwise unable to hold a fastener reliably. Each insert measures 0.5 inches in overall length and accepts an M14 x 1.25 metric fine thread. Manufactured from stainless steel, it delivers corrosion resistance and durability in demanding environments. The tang design aids installation and is removed after the insert is seated. Licensed machinists, mechanics, and maintenance technicians install these inserts to restore or establish precision internal threads in aluminum, magnesium, cast iron, and similar substrates.

The R513-13 is suited for metric fine thread applications requiring M14 x 1.25 thread repair or thread installation in new assemblies. Common use cases include engine block thread repair, transmission housing work, industrial equipment maintenance, and any application where a metric fine internal thread must meet tight tolerance or high-load requirements. Each package contains 6 inserts, making it practical for both single-repair jobs and shop stock. This insert is appropriate for both professional trade environments and production line maintenance operations.

Key Features

• M14 x 1.25 metric fine thread specification for precision fitment
• 0.5 inch overall insert length for standard depth thread repair
• Stainless steel construction provides corrosion resistance and long service life
• Tanged design for positive drive during installation using a compatible installation tool
• Free running configuration allows smooth thread engagement without locking
• Package of 6 inserts for shop convenience and repeat repairs

Compatibility

Designed as an OEM-style thread repair and thread installation solution for applications requiring M14 x 1.25 metric fine internal threads in parent materials including aluminum, cast iron, and similar substrates.

Installation Notes

Installation is performed by machinists or qualified mechanics using a tap sized for the specific insert diameter and pitch, followed by a HELI-COIL compatible installation tool. Power down or de-energize any associated equipment before beginning thread repair work. After the insert is fully seated, break off the tang using a punch or tang break-off tool. Follow applicable shop standards and equipment manufacturer service procedures for torque specifications on reassembly.